NRD Series new control signal type of DC brushless motor drive canned centrifugal pumps have been added. Tachometer feedback (rotation speed pulse output Note 1) is possible at the same time as the pump variable input signal. It is compact, lightweight, low noise, and sealless, so there is no liquid leakage.
An external input signal (400 Hz ± 10% of PWM, Duty 0 – 100% Note 2) can be used to vary the flow rate. In addition, the pump can be operated without a PWM signal. (Max operation fixed) With this circuit, the power can be connected to variable external input to operate the pump.
Note1: Open collector method Outputs at 1 pulse/rotation.
Note2: Connect the PWM control signal with an open collector (drain).
The pumps are equipped with a small, lightweight canned motor encapsulated in resin. This construction requires less space than magnet pumps, while the seal-less design prevents liquid leakage.
There are four different port connection options available, Hose, NPT Thread, R Thread or G ThreadNote. Select the option that best fits your location and installation.
Note: NRD-40/40X only
A Brushless DC motor is employed as the pump drive. This motor design eliminates pump/motor failures due to brush wear, ensuring a service life equal to AC motors.
The NRD series power voltage is classified as safety voltage (50V or less), which allows the user to easily comply with global safety standards such as UL, CSA and CE . The DC power supply does not have a region-specific voltage or frequency, allowing for unified usage.
An external input signal (DC 1 to 5V) can be used to vary the flow rate. The NRD series models are also equipped with a built-in motor drive circuit. With this circuit, the power can be connected to variable external input to operate the pump.
The pump can be installed in an environment with an ambient temperature of up to 50°C (08Z: 40°C). It can also pump fluids as warm as 80°C (08Z: 50°C).
|Max. discharge capacity||5.1 L/min||7.9 L/min||8.0 L/min||13.6 L/min||19.5 L/min||23.5 L/min||25.0 L/min||70.0L/min|
|Max. head||4.1 m||11.5 m||19 m||7.4 m||8.5 m||11 m||15 m||8 m|
|Main materials||GFRPPE Note, GFRPP|
|Liquid temp. range||0 – 80˚C||0 – 50˚C||0 – 80˚C|
|Sealing method||Seal-less construction|
Note: NRD-40/40X is GFRPPS.
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